<div dir="ltr"><div>Dar Griffin<br><br></div>Thank You so much for providing this valuable information.<br><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Regards<br>Kunal Bali<br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;border-collapse:collapse;font-family:Tahoma,Verdana;font-size:12px"><font color="#1F497D"><br></font></p></div></div></div></div></div></div>
<br><div class="gmail_quote">On Fri, Jun 24, 2016 at 6:16 PM, Kyle Griffin <span dir="ltr"><<a href="mailto:ksgriffin2@wisc.edu" target="_blank">ksgriffin2@wisc.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Kunal,<div><br></div><div>The plot function you reference is labeled **vector**, thus it plots a vector. The i (or x, or longitude) direction is independent from the j (or y, or latitude) direction. The two combine in each of their directions to make a vector, as a gsn_csm_vector plot would be expected to do. The function is defined such that the first variable given is in the i direction, and the second variable is in the j direction. So yes, changing the ordering of the variables your provide the function is effectively rotating your grid, and yes, that changes the direction of your vectors.</div><div><br></div><div>NCL has separate functions for wind speed and wind direction, if that is all you are looking for. Neither of those quantities are vectors, however, and would be best plotted by a regular gsn_csm_contour plot.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div><br></div><div>Kyle</div></font></span></div><div class="HOEnZb"><div class="h5"><br><div class="gmail_quote"><div dir="ltr">On Fri, Jun 24, 2016 at 12:06 AM Kunal Bali <<a href="mailto:kunal.bali9@gmail.com" target="_blank">kunal.bali9@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div>The resultant vector basically represents the equation<br></div> sqrt [(U-wind)2 + (V-wind)2]<br><br><br></div>So if we use the function <br><br><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">Plot = gsn_csm_vector_map(wks,u,v,res) <br><br></span></div><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">Is that mean it is providing resultant wind plot or resultant wind direction with wind speed.<br><br>If it is providing resultant wind plot, then using code (wks, v,u, res) instead of (wks, u, v, res). It is plotting different wind plot. <br><br><br></span></div><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">If the code </span><br><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">Plot = gsn_csm_vector_map(wks,u,v,res) plotting resultant wind vector using equation </span>sqrt [(U-wind)2 + (V-wind)2], Then it should plot the same resut in both the cases <span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">(wks, u,v, res) and </span><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">(wks, v,u, res). Right ?<br><br></span></div><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif">please provide some information on that. <br></span><div><span style="font-family:Calibri,"Slate Pro",sans-serif,sans-serif"><br><br><br></span></div></div><div class="gmail_extra"></div><div class="gmail_extra"><br clear="all"><div><div data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Kunal Bali<br></div><div>Research Scholar <br></div><div>Radio & Atmospheric Science Division <br></div><div>CSIR - National Physical Laboratory<br></div><div>New Delhi - 110012<br></div><div>India<br></div><div><br></div><div><br></div><div><br></div><div><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;border-collapse:collapse;font-family:Tahoma,Verdana;font-size:12px"><font color="#1F497D"><br></font></p></div></div></div></div></div></div>
<br></div><div class="gmail_extra"><div class="gmail_quote">On Fri, Jun 24, 2016 at 9:50 AM, Kunal Bali <span dir="ltr"><<a href="mailto:kunal.bali9@gmail.com" target="_blank">kunal.bali9@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I could not understand, what to use <br><span><font color="#888888"><br><br></font></span></div><div class="gmail_extra"><span><font color="#888888"><br clear="all"><div><div data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Kunal Bali<br></div><div>Research Scholar <br></div><div>Radio & Atmospheric Science Division <br></div><div>CSIR - National Physical Laboratory<br></div><div>New Delhi - 110012<br></div><div>India<br></div><div><br></div><div><br></div><div><br></div><div><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;border-collapse:collapse;font-family:Tahoma,Verdana;font-size:12px"><font color="#1F497D"><br></font></p></div></div></div></div></div></div></font></span><div><div>
<br><div class="gmail_quote">On Thu, Jun 23, 2016 at 9:54 PM, Dennis Shea <span dir="ltr"><<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">The function plots the resultant vector.<br><br><a href="http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_csm_vector_map.shtml" target="_blank">http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_csm_vector_map.shtml</a><br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Sat, Jun 18, 2016 at 8:31 AM, Kunal Bali <span dir="ltr"><<a href="mailto:kunal.bali9@gmail.com" target="_blank">kunal.bali9@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div> <div lang="en-GB"><div>Dear NCL users</div><div><br></div><div>Please correct me. The code given below is just for potting wind directions but not far resultant vector.</div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif"><br></span></div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif">Plot = gsn_csm_vector_map(wks,u,v,res) </span></div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif"><br></span></div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif">It will provide only zonal wind direction. If we modify above code with (wks,v,u,res) then it will provide the meridional wind direction. </span></div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif"><br></span></div><div><span style="font-family:Calibri,'Slate Pro',sans-serif,sans-serif">So if I want to plot the resultant vector of u and v then what should I do? </span></div><div><br></div><div>Regards</div><span><font color="#888888"><div>Kunal bali</div></font></span></div>
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